I am using Imagemagic on my site, had the install done by photopost. I started getting this error just today and decided to change to GD2--but now it seems like my site pulls a window error and shuts down in IE (possibly unrelated, I know. But it was the only change)
So I researched here and found my Path for MOGRIFY executable it is set to
/usr/bin/mogrify
I have no idea if that is right or now and cannot find it on my server
I am assuming its right since I used the install service and I don't mind staying at GD2 as long as it doesn't have an adverse effect on my site.